摘要详情

ID / 提交时间

89 / 2025-02-21 16:36:31

标题

Robustness Improvement of Induction Motor Model Predictive Control System Based on Rotor Time Constant Identification

关键字

asynchronous motor,model predictive control,rotor time constant,online parameter identification

主题及专题

Review group 12

状态

终稿

作者

Tianle Tian / North China Electric Power University；School of Electrical and Electronic Engineering

Long Li / North China Electric Power University

Xu Zhang / North China Electric Power University；School of Electrical and Electronic Engineering

Yongchang Zhang / North China Electric Power University;School of Electrical and Electronic Engineering

binqi Bi / North China Electric Power University；School of Electrical and Electronic Engineering

Shuhan Xi / North China Electric Power University

摘要

In the model predictive current control (MPCC) based on indirect field-orientation, the accuracy of the rotor time constant directly affects the precision of field orientation. Due to various reasons such as magnetic saturation and temperature changes, the rotor time constant varies. This paper analyzes the influence of rotor time constant errors on field orientation and proposes a method to compensate for the rotor time constant using output torque. When orientation error exists, change the excitation current to switch the operation point and then use the difference in the measured output torque at different operation points to identify the rotor time constant. With the proposed algorithm, the impact of rotor time constant errors can be reduced. Simulation verifies the feasibility of the proposed method.